    package main

    import (
      "net/http"
      "github.com/gin-gonic/gin"
    )

    func main() {
      r := gin.Default()
      r.GET("/", func(c *gin.Context) {
        c.JSON(http.StatusOK, gin.H{
          "message": "Hello World!",
        })
      })
      r.Run() // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080")
    }